{"product_id":"black-decker-bdgl1800-replacement-battery-18v-3000mah-ni-mh","title":"Black \u0026 Decker BDGL1800 Replacement Battery 18V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBlack \u0026amp; Decker BDGL1800 Series — 18V Ni-MH 3000mAh Replacement Battery (HPB18)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 18V Ni-MH replacement battery rated at 3000mAh (54Wh) for the Black \u0026amp; Decker BDGL1800 cordless string trimmer and compatible 18V models. It fits the BDGL1800, BDGL18K-2, XTC183BK, XTC18BK, and over 160 additional Black \u0026amp; Decker 18V tools sharing the HPB18 pack form factor. Voltage and connector match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBDGL1800 and HPB18 platform fit:\u003c\/strong\u003e\n    These trimmers run on a shared 18V rail with a keyed slide-in connector and a single thermistor line for temperature monitoring. Any pack with the HPB18 form factor, matching connector, and correct thermistor pin wiring will communicate with the charger and tool without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on a BDGL1800 platform, monitoring cell voltage balance and thermistor response. The BMS held within spec across the full discharge curve with no false thermal cutoffs at ambient temperature.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH memory effect management:\u003c\/strong\u003e\n    Ni-MH cells in trimmer packs degrade faster with repeated partial discharges. Run the trimmer until the motor noticeably slows before recharging — this keeps the cells cycling through their full capacity range and reduces voltage depression over time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS overcurrent trip on trigger-pull inrush in the BDGL1800\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eString trimmers draw a sharp current spike the moment the motor starts — the cutting head is stationary and the motor must accelerate from zero. On the HPB18 platform, the BMS monitors this inrush window and will trip if the spike exceeds its overcurrent threshold. A new or cold pack can have slightly higher internal resistance, which causes a larger voltage drop at the terminals during that inrush window. To reduce nuisance trips on a new pack, engage the trimmer at half throttle for the first two cycles before running it at full load — this lets the BMS log the motor's inrush profile before applying its protection thresholds.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger shows no response or blinks error on a new pack after storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs self-discharge during storage, and if the cell voltage drops far enough, the charger's acceptance circuit will not recognise the pack as a valid charge target. On the Black \u0026amp; Decker 18V platform, the charger typically expects a minimum pack voltage near 14–15V to begin the charge cycle. If the charger shows no light or blinks an error immediately, the pack may be below acceptance voltage. Place the pack in the charger and leave it for 10–15 minutes — many Black \u0026amp; Decker 18V chargers include a recovery pulse mode that will attempt to bring a low pack up to acceptance voltage before switching to the main charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416072388698,"sku":"BWCS-BPS718PX-1","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416072421466,"sku":"BWCS-BPS718PX-2","price":131.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416072454234,"sku":"BWCS-BPS718PX-3","price":146.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS718PX-1.webp?v=1779760116","url":"https:\/\/batteryweb.com\/products\/black-decker-bdgl1800-replacement-battery-18v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}